Serial operation of a 2 PC to 2 Monitor KVM switch (DKS202-M24) behind a 8K Extender (DKE30SS-M25-EUBK).

vrenken

3. Oktober 2026 22:28 Bearbeitet

Hi,

I am searching for solutions to bring move some PC's out of the office and into the basement (rack mounted). However I do not want to sacrifice screen resolution nor refresh rates.

The idea is to have one monitor, and have two PC's connected to it using a KVM that os toggleable using keyboard shortcuts. 
Layout-wise the KVM would be in the basement next to the PC's, and the extender would bring the selected signal into the office.

The question that I am having is if this is possible? Will the EDID signals still pass through correctly and the KVM able to respond to the keyboard shortcuts - even being after the extender? And will the USB passthrough through both devices still also work at acceptable speeds?

Thanks in advance & keep up making great products.

Kind regards,

Peter Vrenken

0

• Offizieller Kommentar

  

  TESmart.01

  30. Oktober 2026 09:04

  Hi Peter,

  Thanks for sharing your setup idea! Moving your PCs into a basement rack while keeping your monitor, keyboard, and mouse in the office is an interesting use case.

  We believe your proposed setup is technically feasible in principle, although there are a few important points to consider.

  1. Video transmission and EDID

  Connecting the DKS202-M24 to the DKE30SS-M25 should allow you to extend the selected PC's video output to your office.

  The DKS202-M24 features built-in EDID emulation, which helps maintain display detection when switching computers.

  However, the actual resolution and refresh rate will depend on the entire signal chain, including the PCs, KVM, extender, cables, and monitor. We haven't verified this exact combination, so we can't guarantee every display mode.

  2. USB and keyboard/mouse functionality

  The DKE30SS-M25 supports keyboard and mouse extension, but it is not intended to function as a general-purpose high-speed USB extender.

  One limitation is that the extender's USB connection would use the KVM's standard USB 3.0 port rather than its dedicated keyboard/mouse ports.

  Since the DKS202-M24 only recognizes keyboard switching hotkeys through its dedicated K&M ports, the normal KVM hotkey switching function would not be available in this configuration.

  3. An alternative solution: Network-based UART control

  There is another approach worth considering!

  The UART-enabled version of the DKS202-M24 supports external switching commands through its 3.5mm serial control interface.

  Since both PCs and the KVM would be located together in your basement, you could potentially add a small, always-on controller (such as a Raspberry Pi) to handle KVM switching.

  Here's how it could work:

  • Connect the controller to the KVM's 3.5mm UART control port using a compatible USB-to-UART adapter.
  • Connect both PCs and the controller to the same local network.
  • Run a simple control application on each PC that sends switching requests to the controller.
  • The controller then sends the corresponding UART command to the KVM to switch between PC1 and PC2.

  This way, you could initiate switching from either PC without relying on the KVM's built-in keyboard hotkeys.

  It also avoids connecting two serial transmitters directly to the same control port.

  Please note that this is a potential DIY workaround rather than an officially tested TESmart solution. TESmart does not provide the third-party controller, USB-to-UART adapter, or custom control software.

  You would also need to confirm that your DKS202-M24 has the UART-enabled interface and use an adapter compatible with its electrical specifications and pinout.

  4. One additional consideration

  The DKE30SS-M25 provides a single DisplayPort extension channel, so this setup would support one remote monitor. Extending both outputs of the DKS202-M24 would require an additional compatible video extension path.

  Overall, we think your idea has potential. The video and basic keyboard/mouse extension should be achievable under the appropriate conditions, while a separate network-based UART controller could provide a flexible way to handle PC switching.

  Hope this gives you a useful starting point, and thanks again for supporting TESmart!

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